//****************************************************************************** // Demo - MSP430F169, I2C, ADC12, UART0, Get time, temp, pressure and transmit // #include #include unsigned int i = 0; unsigned char second; unsigned char minute; unsigned char hour; unsigned char day; unsigned char date; unsigned char month; unsigned char year; unsigned int temp; unsigned int pressure; unsigned int checksum = 0; unsigned char lower; char string2[] = {"AT+SBDWB=10\r"}; // Command to transfer a 200 byte message to 9601-D buffer char string3[] = {"AT+SBDI\r"}; // Command to perform SBD session unsigned char modem[15]; unsigned char network = 0x00; unsigned int flag = 0; unsigned int wait; unsigned char x; unsigned char y; void main(void) { WDTCTL = WDTPW + WDTHOLD; // Stop watchdog P3SEL |= 0x0A; // Assign I2C pins to module U0CTL |= I2C + SYNC; // Switch USART0 to I2C mode (Reccommended I2C init procedure) U0CTL &= ~I2CEN; // Disable the I2C module (Recommended I2C init procedure) // Now configure I2C Module with I2CEN = 0 I2CTCTL |= I2CSSEL_1; // ACLK I2CSCLH = 0x00; // High period of SCL I2CSCLL = 0x00; // Low period of SCL I2CNDAT = 0x08; // Send 8 bytes (byte = 8 bits) I2CSA = 0x0068; // Slave address is 0x68 I2CNDAT = 0x01; // Read/Write 1 byte (byte = 8 bits) // Now enable I2C Module U0CTL |= I2CEN; // Enable I2C using a 7-bit address while ((I2CDCTL & I2CBUSY) == I2CBUSY); // If I2C is busy do nothing I2CIFG &= ~TXRDYIFG; // Reset TXRDYIFG bit U0CTL |= MST; // Master mode I2CIFG &= ~ARDYIFG; // Reset ARDYIFG bit I2CTCTL |= I2CTRX + I2CSTT + I2CSTP; // Transmit, ST, SP (clears MST) while ((I2CIFG & ARDYIFG) != ARDYIFG) // Check if all data has been sent { while (( I2CIFG & TXRDYIFG) != TXRDYIFG); // Do nothing if I2C is not ready to transmit data I2CDRB = 0x00; // Reset register pointer to read seconds first I2CIFG |= ARDYIFG; // All data has been sent } while ((I2CDCTL & I2CBUSY) == I2CBUSY); // If I2C is still busy do nothing while ( i < 7) { I2CIFG &= ~ARDYIFG; // Reset ARDYIFG bit I2CTCTL &= ~I2CTRX; // Reset I2CTRX bit U0CTL |= MST; // Master mode I2CTCTL |= I2CSTT + I2CSTP; // Read, ST, SP (clears MST) while ((I2CIFG & ARDYIFG) != ARDYIFG) // Check if all data has been read { while (( I2CIFG & RXRDYIFG) != RXRDYIFG); // Do nothing if I2C is not ready to read data switch (i) { case 0: second = I2CDRB; // Read and store seconds I2CIFG |= ARDYIFG; // All data has been read break; case 1: minute = I2CDRB; // Read and store minutes I2CIFG |= ARDYIFG; break; case 2: hour = I2CDRB; // Read and store hours I2CIFG |= ARDYIFG; break; case 3: day = I2CDRB; // Read but don't store day (must read to increment pointer) I2CIFG |= ARDYIFG; break; case 4: date = I2CDRB; // Read and store date I2CIFG |= ARDYIFG; break; case 5: month = I2CDRB; // Read and store month I2CIFG |= ARDYIFG; break; case 6: year = I2CDRB; // Read and store year I2CIFG |= ARDYIFG; break; } i++; } } i = 0; P6SEL |= 0x02; // Enable A/D channel A1 ADC12CTL0 = ADC12ON+SHT0_0; // Turn on ADC12, set sampling time ADC12CTL1 = SHP; // Use sampling timer ADC12MCTL0 = SREF_2 + INCH_1; // Vr+ = VeREF+ (external) ADC12CTL0 |= ENC; // Enable conversions ADC12CTL0 |= ADC12SC; // Start conversion while (ADC12CTL1 & ADC12BUSY == ADC12BUSY); // If ADC is busy do nothing i++; temp = ADC12MEM0; // Store result while (i < 10) { ADC12CTL0 |= ADC12SC; // Start conversion while (ADC12CTL1 & ADC12BUSY == ADC12BUSY); // If ADC is busy do nothing temp = temp + ADC12MEM0; // Add new result to last result i++; } temp = temp / 10; i = 0; ADC12CTL0 &= ~ENC; // Disable conversions P6SEL |= 0x04; // Enable A/D channel A2 ADC12CTL0 = ADC12ON+SHT0_4; // Turn on ADC12, set sampling time ADC12CTL1 = SHP; // Use sampling timer ADC12MCTL0 = SREF_2 + INCH_2; // Vr+ = VeREF+ (external) ADC12CTL0 |= ENC; // Enable conversions ADC12CTL0 |= ADC12SC; // Start conversion while (ADC12CTL1 & ADC12BUSY == ADC12BUSY) // If ADC is busy do nothing { } i++; pressure = ADC12MEM0; // Store result while (i < 10) { ADC12CTL0 |= ADC12SC; // Start conversion while (ADC12CTL1 & ADC12BUSY == ADC12BUSY) // If ADC is busy do nothing { } pressure = pressure + ADC12MEM0; // Add new result to last result i++; } pressure = pressure / 10; printf ("%x/", month); printf ("%x/", date); printf ("200%x ", year); printf ("%x:", hour); printf ("%x:", minute); printf ("%x\n", second); printf ("Temperature average is 0x%x\n", temp); printf ("Pressure average is 0x%x\n", pressure); printf ("\n"); i = 0; P1SEL |= 0x40; // Set P1.6/TA1 for I/O P1DIR &= 0x40; // Set P1.6/TA1 to input direction P3SEL = 0x30; // P3.4,5 = USART0 TXD/RXD U0CTL &= ~I2C + ~SYNC + ~I2CEN; U0CTL &= ~I2C + ~SYNC + ~I2CEN; U0CTL |= SWRST; ME1 |= UTXE0 + URXE0; // Enabled USART0 TXD/RXD UCTL0 |= CHAR; // 8-bit character, SWRST=1 UTCTL0 |= SSEL0; // UCLK = ACLK UBR00 = 0x03; // 9600 from 32.768 kHz UBR10 = 0x00; // UMCTL0 = 0x4A; // Modulation for 9600 UCTL0 &= ~SWRST; // Initialize USART state machine IE1 |= URXIE0; // Enable USART0 RX interrupt IFG1 &= ~UTXIFG0; // Clear inital flag on POR _BIS_SR( GIE ); // Enable interrupts while ( flag == 0) { x = 0; y = 0; while (x < sizeof string2-1) // Send command to tranfer data to modem buffer { while (!(U0TCTL & TXEPT)); // USART0 TX buffer ready? TXBUF0 = string2[x++]; } for( wait = 0; wait < 5000; wait++); // Wait for interrupt to receive all data for (y = 0; y <9 ; y++) { printf ( "%x\n", modem[y]); } printf ("Modem is ready to accept message\n"); x = 0; y = 0; while (!(U0TCTL & TXEPT)); TXBUF0 = month; checksum += month; while (!(U0TCTL & TXEPT)); TXBUF0 = date; checksum += date; while (!(U0TCTL & TXEPT)); TXBUF0 = year; checksum += year; while (!(U0TCTL & TXEPT)); TXBUF0 = hour; checksum += hour; while (!(U0TCTL & TXEPT)); TXBUF0 = minute; checksum += minute; while (!(U0TCTL & TXEPT)); TXBUF0 = second; checksum += second; while (!(U0TCTL & TXEPT)); TXBUF0 = temp >> 8; checksum += temp >> 8; while (!(U0TCTL & TXEPT)); lower = temp; TXBUF0 = lower; checksum += lower; while (!(U0TCTL & TXEPT)); TXBUF0 = pressure >> 8; checksum += pressure >> 8; while (!(U0TCTL & TXEPT)); lower = pressure; TXBUF0 = lower; checksum += lower; lower = checksum; while (!(U0TCTL & TXEPT)); TXBUF0 = checksum >> 8; while (!(U0TCTL & TXEPT)); TXBUF0 = lower; for( wait = 0; wait < 5000; wait++); // Wait for interrupt to receive all data for (y = 0; y <5 ; y++) { printf ( "%x\n", modem[y]); } printf ("Message accepted\n"); x = 0; y = 0; while( network == 0x00) { network = P1IN; // Check for network availability if( network == 0x00) { printf("No network available\n"); } } printf("Network available\n"); while (x < sizeof string3-1) { while (!(U0TCTL & TXEPT)); // USART0 TX buffer ready? TXBUF0 = string3[x++]; } printf("Sending Message...\n"); while ( y < 8); // Wait for interrupt to receive 8 byes of data for( wait = 0; wait < 5000; wait++); // Wait for interrupt to receive rest of data for (y = 0; y <15 ; y++) { printf ( "%x\n", modem[y]); } if( modem[9] == 0x31) // If modem[9] = 1 message was sent { flag = 1; printf ("Message sent!\n"); // If modem[9] = 2 message was not sent } if(modem[9] == 0x32) { printf ("Message was not sent, trying again...\n"); } } } // UART0 RX ISR #pragma vector=UART0RX_VECTOR __interrupt void usart0_rx (void) { modem[y] = RXBUF0; y++; }